Robert Oberst, another WSM competitor also says the same thing and talks about it on the Joe Rogan podcast (#1321 I believe). To quote:
"I went from football to strongman, and in football we never did deadlifts. It was all hang cleans and power cleans, which by the way, quick little tip: if you’re deadlifting to be a better deadlifter fine. If you’re not, (you’re) doing that for deadlift’s sake, don’t fucking do it. The risk to reward ratio is a joke."
"A lot of people are not going to like that I’m saying that. (…) If you go to any NFL gym, any college football gym, any athletics where people are actually getting paid and it matters what they’re doing, they’re not deadlifting. They’re hang cleaning and power cleaning."